#define  _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <vector>
using namespace std;
int main()
{
	string s1 = ("abcd");
	vector<int> v2({1,3,5,7});
	//string:: ietraor it =s1.begin()
	auto it = s1.begin();
	while(it != s1.end())
	{
		cout << *it << " ";
		it++;
	}
	cout << endl;
	
	for (auto it1 : v2)
	{
		cout << it1 << " ";
	}
	return 0;
}